摘要
压裂井口八通管线冲蚀磨损是影响压裂效益的关键难题,当前一些冲蚀模型对井口八通的冲蚀预测不准确,因此开展了井口八通冲蚀预测新方法的研究。基于有限元数值模拟方法,建立压裂井口八通几何模型,根据实际压裂施工数据,分别构建Generic模型、Oka模型、Finnie模型等冲蚀模型并进行冲蚀模拟,比较冲蚀速率模拟结果与实际井口八通冲蚀率,分析各冲蚀模型预测结果的准确度,明确了所采用的Finnie冲蚀模型的预测结果更准确,然后依据Finnie冲蚀模型开展各施工参数对冲蚀磨损的影响机制研究。研究结果表明,针对井口八通的冲蚀模拟,其他冲蚀模型的预测准确率较低,而Finnie冲蚀模型的预测准确率达90.32%。依据Finnie模型研究不同施工参数对管壁冲蚀率的影响机制,通过优化注入排量、颗粒直径等施工参数,使优化后模型预测的管壁冲蚀率比原始施工参数下的预测值降低19.12%,比原始施工参数下的实际冲蚀率降低11.29%。Finnie冲蚀模型能准确预测井口八通的冲蚀情况,依据Finnie冲蚀模型评价施工参数对冲蚀率的影响,从而获得更加合理的施工参数组合以降低冲蚀率。
Erosion and wear of the eight-way pipeline at the fracturing wellhead is a critical challenge affecting fracturing efficiency.Currently,some erosion models are inaccurate in predicting the erosion of the wellhead eight-way pipeline.Therefore,research on a new method for predicting the erosion of the wellhead eight-way pipeline has been carried out.Based on the finite element numerical simulation method,a geometric model of the fracturing wellhead eight-way pipeline was established.Using actual fracturing operation data,erosion models such as the Generic model,Oka model,and Finnie model were constructed respectively for erosion simulation.The erosion rate simulation results were compared with the actual erosion rate of the wellhead eight-way pipeline,and the accuracy of the prediction results of each erosion model was analyzed.It was confirmed that the prediction results of the adopted Finnie erosion model were more accurate.Subsequently,based on the Finnie erosion model,research was conducted on the influence mechanism of various operation parameters on erosion and wear.The results show that for the erosion simulation of the wellhead eight-way pipeline,the prediction accuracy of the erosion rate by other erosion models is relatively low,while the prediction accuracy of the Finnie erosion model reaches 90.32%.Based on the Finnie model,the influence mechanism of different operation parameters on the pipeline wall erosion rate was studied.By optimizing operation parameters such as injection displacement and particle diameter,the erosion rate predicted by the model after parameter optimization is 19.12%lower than that predicted under the original operation parameters,and 11.29%lower than the actual erosion rate under the original operation parameters.The Finnie erosion model can accurately predict the erosion of the wellhead eight-way pipeline.It is recommended to evaluate the influence of operation parameters on the erosion rate based on the Finnie erosion model and adopt a more reasonable combination of operation parameters to reduce the erosion rate.
作者
史小东
张浩
王晓岗
赵宁
李建鹏
王芫芫
赵震程
SHI Xiaodong;ZHANG Hao;WANG Xiaogang;ZHAO Ning;LI Jianpeng;WANG Yuanyuan;ZHAO Zhencheng(SINOPEC Technology Inspection Center of Shengli Oilfield,Dongying 257000,Shandong,China;State Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum(Beijing),Beijing 102249,China;College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102249,China)
出处
《石油钻采工艺》
北大核心
2025年第4期500-510,532,共12页
Oil Drilling & Production Technology
基金
国家自然科学基金“碳酸盐岩油藏二氧化碳在提高采收率与封存中的运移演化规律研究”(编号:42302272)。
关键词
井口八通
Finnie冲蚀模型
冲蚀预测
数值模拟
施工参数优选
冲蚀率
fracturing Manifold
Finnie erosion model
erosion prediction
numerical simulation
construction parameter optimization
erosion rate
作者简介
第一作者:史小东(1972-),高级工程师,现从事海洋工程、油田地面工程的检测检验和研究工作。E-mail:shixiaodong.slyt@sinopec.com;通信作者:赵震程(2001-),在读硕士研究生,现从事CO_(2)地质利用与封存、井筒冲蚀与腐蚀等方面的研究工作。E-mail:zzc_0304@163.com。
